Green Corrosion Inhibitor of Aluminum in Artificial Acid Rain by Rambutan Peel Extract

Fadel Mohamed BinYehmed (1)
(1) , Libya

Abstract

The inhibitive action of methanolic Rambutan Peel Extract (RPE) as green corrosion inhibitor of aluminum was investigated in artificial acid rain (AAR) using potentiodynamic polarization. The results revealed that RPE was an effective eco-friendly inhibitor for aluminum. The results also showed the inhibition efficiency increased with increase extract for Al and it reached maximum IE 93.18% at 8 g/L, and the values of IE decreased with temperature. The inhibitive action is attributed to the adsorption of the inhibitor molecules on the metal surface following Langmuir adsorption isotherm. Standard free energy of adsorption ∆Gads (-12.81 to -15.107 kJ mol-1), a physical adsorption mechanism is proposed for the adsorption of the inhibitor on the surface of aluminum.

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Authors

Fadel Mohamed BinYehmed
Yehmed@sabha.edu.ly (Primary Contact)
Fadel Mohamed BinYehmed. (2019). Green Corrosion Inhibitor of Aluminum in Artificial Acid Rain by Rambutan Peel Extract. Journal of Pure & Applied Sciences, 18(4). Retrieved from https://sebhau.edu.ly/journal/jopas/article/view/2387

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